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The Dallas Cowboys went into free agency in need of running back depth and, a couple days in, it looks like they might soon be in need of still more running back depth.

Lance Dunbar is visiting with the San Francisco 49ers on Thursday, according to Brandon George of the Dallas Morning News.

Dunbar’s situation is murky, because he’s coming off major surgery to repair the torn anterior cruciate ligaments (his anterior cruciate ligament and medial collateral ligament) that ended his season in October. Prior to that, Dunbar had 21 receptions for 215 yards out of the backfield, and was rounding into the Reggie Bush-like, pass-catching specialist back that offensive coordinator Scott Linehan envisioned.

After the injury, no one really knows. As recently as at the Combine last month, Cowboys executive vice president Stephen Jones said there’s a chance Dunbar could open the season on the physically unable to perform list.

“Obviously Dunbar is a big question coming off a major surgery,” Jones said, per the Morning News. “He was having a heck of a year before he was hurt. We still don't know exactly how long that's going to be. It's real questionable as to whether he's a PUP guy or if we could sign him, will he be a PUP guy or what would he be? And then of course we do feel like we need another back to go with [Darren] McFadden. Where we get that, whether it's in the draft or whether we do it in free agency, a lot of different ways you can go there.”